Electromagnetic effects on first wall and structural components

Miya, Kenzo; Crutzen, Y.; Takagi, Toshiyuki; Boccacini, L.V.; Bottura, L.

doi:10.1016/0920-3796(91)90195-v

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…Once a conductive component vibrates in an external magnetic field, additional eddy currents due to the component movement can be induced, which generate an additional Lorentz force in the direction opposite to the velocity vector. Since the intensity of the additional eddy currents is also intrinsically proportional to the deflection velocity, this electromagnetic (EM) force has a similar feature to the viscous damping, and thus can be named as the magnetic damping force [1] . On the other hand, it is also known that the structural deflection and motion in an external magnetic field may also perturb the electromagnetic field, especially for current-carrying conductors and structures of ferromagnetic material.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Electromagneto-Mechanical Coupling Dynamic Response of a Typical Tokomak Structure

Tianyan¹,

Yuan²,

Li³

et al. 2013

Plasma Sci. Technol.

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In an effort to simulate the dynamic behavior of a non-ferromagnetic conducting structure with consideration of the magnetic damping effect, a finite element code is developed, which is based on the reduced vector potential (Ar) method, the step-by-step integration algorithm and a time-partitioned strategy. An additional term is introduced to the conventional governing equations of eddy current problems to take into account the velocity-induced electric field corresponding to the magnetic damping effect. The TEAM-16 benchmark problem is simulated using the proposed method in conjunction with the commercial code ANSYS. The simulation results indicate that the proposed method has better simulation accuracy, especially in the presence of a high-intensity external magnetic field.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Electromagneto-Mechanical Coupling Dynamic Response of a Typical Tokomak Structure

Tianyan¹,

Yuan²,

Li³

et al. 2013

Plasma Sci. Technol.

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“…These components operate in a complex time-dependent magnetic field environment that may cause large eddy currents, huge electromagnetic loads and significant mechanical effects during transient off-normal conditions [ 11. Furthermore, the coupling effects between the magnetic fields and their mechanical deformation behaviour should be taken into consideration [2].…”

Section: Introductionmentioning

confidence: 99%

Modelling, analysis and validation of electromagnetic-mechanical coupling on clean test pieces

et al. 1994

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A 3D numerical modelling, analysis and validation of the coupling effects between eddy currents and conductor motion, during transient electromagnetic phenomena is presented. The method involves a finite edge element computation from the electromagnetic point of view, coupled with a mechanical modal analysis. This approach is first implemented into clean benchmark problems concerning cantilever plates in flexion and torsion. The numerical predictions are in agreement with experiments. An application of the method is presented after, using a box-type component to simulate an in-vessel segment of a fusion reactor. Finally, the ELBA testing device, installed at the TESLA Laboratory and the first experimental validation studies are described, in order to confirm the applied numerical techniques.

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